本文整理汇总了C++中utils::pow方法的典型用法代码示例。如果您正苦于以下问题：C++ utils::pow方法的具体用法？C++ utils::pow怎么用？C++ utils::pow使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类utils的用法示例。
在下文中一共展示了utils::pow方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: result
// Quantise a subband in in-place transform order
// This version of quantise_subbands assumes multiple quantisers per subband.
// It may be used for either quantising slices or for quantising subbands with codeblocks
const Array2D quantise_subbands(const Array2D& coefficients, const BlockVector& qIndices) {
const Index transformHeight = coefficients.shape()[0];
const Index transformWidth = coefficients.shape()[1];
// TO DO: Check numberOfSubbands=3n+1 ?
const int numberOfSubbands = qIndices.size();
const int waveletDepth = (numberOfSubbands-1)/3;
Index stride, offset; // stride is subsampling factor, offset is subsampling phase
Array2D result(coefficients.ranges());
// Create a view of the coefficients, representing the LL subband, quantise it,
// then assign the result a view of the results array. This puts the quantised
// LL subband into the result array in in-place transform order.
// ArrayIndices2D objects specify the subset of array elements within a view,
// that is they specify the subsampling factor and subsampling phase.
stride = pow(2, waveletDepth);
const ArrayIndices2D LLindices = // LLindices specifies the samples in the LL subband
indices[Range(0,transformHeight,stride)][Range(0,transformWidth,stride)];
result[LLindices] =
quantise_LLSubband(coefficients[LLindices], qIndices[0]);
// Next quantise the other subbands
// Note: Level numbers go from zero for the lowest ("DC") frequencies to depth for
// the high frequencies. This corresponds to the convention in the VC-2 specification.
// Subands go from zero ("DC") to numberOfSubbands-1 for HH at the highest level
for (char level=1, band=1; level<=waveletDepth; ++level) {
stride = pow(2, waveletDepth+1-level);
offset = stride/2;
// Create a view of coefficients corresponding to a subband, then quantise it
//Quantise HL subband
const ArrayIndices2D HLindices = // HLindices specifies the samples in the HL subband
indices[Range(0,transformHeight,stride)][Range(offset,transformWidth,stride)];
result[HLindices] = quantise_block(coefficients[HLindices], qIndices[band++]);
//Quantise LH subband
const ArrayIndices2D LHindices = // LHindices specifies the samples in the LH subband
indices[Range(offset,transformHeight,stride)][Range(0,transformWidth,stride)];
result[LHindices] = quantise_block(coefficients[LHindices], qIndices[band++]);
//Quantise HH subband
const ArrayIndices2D HHindices = // HHindices specifies the samples in the HH subband
indices[Range(offset,transformHeight,stride)][Range(offset,transformWidth,stride)];
result[HHindices] = quantise_block(coefficients[HHindices], qIndices[band++]);
}
return result;
}